Martha's Vineyard weather in September 2025

Expect 22°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Martha's Vineyard in September. Check more long-term weather averages for Martha's Vineyard in September before you book your next holiday to Massachusetts in 2025/2026.

  • 22°C maximum daytime temperature in September in Martha's Vineyard22
    22°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Martha's Vineyard8
    8 days with some rainfall
  • 14°C minimum night-time temperature in September in Martha's Vineyard14
    14°C min night temperature
  • 12 hours of daylight per day in September in Martha's Vineyard12
    12 hours of daylight per day
  • No heat & humidity in September in Martha's Vineyard0
    No heat & humidity
  • 88 mm monthly rainfall in September in Martha's Vineyard88
    88 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Martha's Vineyard6
    6 (High) UV index
  • 18°C sea temperature in September in Martha's Vineyard18
    18°C sea temperature

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Martha's Vineyard by month

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The September weather guide for Massachusetts (Martha's Vineyard) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Martha's Vineyard in September?

Daytime temperatures usually reach 22°C in Martha's Vineyard in September, falling to 14°C at night.

How sunny is it in Martha's Vineyard in September?

There are normally 8 hours of bright sunshine each day in Martha's Vineyard in September - that's 60% of daylight hours.

How warm is the sea around Martha's Vineyard in September?

The average sea temperature around Martha's Vineyard in September is 18°C.

Does it rain in Martha's Vineyard in September?

There are usually 8 days with some rain in Martha's Vineyard in September and the average monthly rainfall is 88mm.

What is the chance of a hurricane in Martha's Vineyard in September?

On average less than 1 day in September in Martha's Vineyard is likely to be affected by the passage of one or more tropical storms.

Martha's Vineyard September sunrise & sunset times

Browse the sunrise and sunset times for Martha's Vineyard in September 2025. Select a month to view Martha's Vineyard sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:09 18:15
Monday, 15th September 2025 05:23 17:51
Tuesday, 30th September 2025 05:38 17:25

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